If the size is important then go with the GT. If you plan to have it professionally calibrated you may want to go with the VT. I have a VT50 but if I had to chose between the 65" and 55" I would go with the 65" every time. The quality of the pictures are going to be VERY comparable as they both use the same panel. The difference is the Pro controls, the ISF modes (you can't activate them yourself without special software), the screen filter, and the style (one sheet of glass).
I say go big but you're the one that has to live with it.
If the size is important then go with the GT. If you plan to have it professionally calibrated you may want to go with the VT. I have a VT50 but if I had to chose between the 65" and 55" I would go with the 65" every time. The quality of the pictures are going to be VERY comparable as they both use the same panel. The difference is the Pro controls, the ISF modes (you can't activate them yourself without special software), the screen filter, and the style (one sheet of glass).
I say go big but you're the one that has to live with it.